How to Measure Your Balcony for a Railing Order

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To measure a balcony for a railing, record the exact length of each open edge, the height from the floor to the top of the railing position, and the position of posts, walls and door openings. Take every measurement at least twice and sketch the balcony with the dimensions written on it before sending the order.

Why accurate measurements matter

A balcony railing is made to measure, so the numbers you send are the numbers the factory works from. A small error of a few centimeters can mean a panel that does not fit, a gap that needs an awkward filler, or a post that lands on an opening. Careful measuring at the start saves time, avoids rework and keeps the final result looking clean.

Before you pick up a tape measure, decide which parts of the balcony need a railing. Some balconies have a full railing on three sides, others only on the front. Knowing this first keeps the measuring session focused.

Tools you need

You do not need professional equipment, but a few simple tools make the job reliable:

A steel tape measure, preferably 5 meters or longer
A pencil and paper, or a notes app
A spirit level or a long straight object to check heights
A helper, which makes long runs much easier to measure straight

Measure in centimeters and write down each number with the side it belongs to.

Measuring the length of each edge

Start at one corner and measure each open edge of the balcony from wall to wall, or from wall to corner if the railing ends at a column. Measure along the finished edge where the railing will sit, not along the floor tiles if the edge is set back. Note any step, recess or threshold, because the railing base may need to sit differently at those points.

Measure every edge separately, even if they look equal. Real balconies are often a few centimeters off square, and the factory needs the actual length of each run.

Measuring the height

Measure the height from the finished floor to the place where the top rail should end. Take the reading at both ends of each run and at the middle, since floors can slope slightly for drainage. Use the lowest point as your reference when the floor is not level, and mention any noticeable slope in your notes.

Height requirements for railings are set by the Israeli standard SI 1142 and by local building rules. Do not assume a number from memory. Your order will specify the final height, which is checked with the engineer or the factory.

Recording posts, walls and openings

Mark where the railing will be fixed. Note whether it will be mounted on the floor slab, on the outer face of a wall, on the top of a wall, or on the balcony edge beam. Measure the distance from each corner to the first fixing point, and record the position of any door, window, drain or electrical box that could interfere.

Also note the material of the surface, such as concrete, tile, stone or existing metal, because it affects how the fixings are made.

Drawing a simple sketch

A quick sketch is one of the most useful things you can send. Draw the balcony as a plan from above, write each length next to its edge, and mark doors, walls and posts. Add a side view showing the height and any step. Photos taken straight on from several angles work well alongside the sketch.

Label every dimension in centimeters
Mark the direction of the view and the front of the balcony
Circle anything unusual, such as a column or uneven floor

Checking your measurements before ordering

Once you have your numbers, measure everything a second time, ideally with a different person reading the tape. Compare the total of the edges with what you expect from the layout. If the figures differ by more than a centimeter or two, measure again before you send anything.

Bring your sketch and photos to the on-site measurement visit if the factory offers one. A professional check often catches details that are easy to miss when measuring alone.

Frequently asked questions

Do I need to measure the balcony floor or the railing line?

Measure along the line where the railing will actually stand. If the balcony edge is set back from the outer wall, or the floor has a step, record those differences separately.

Should I measure the length on the inside or the outside?

Measure the length along the finished edge where the railing will be fixed, and note whether the reading is to the inner or outer face. This prevents a mismatch at the corners.

What if my balcony floor is not level?

Take height readings at several points and note the lowest and highest values. Mention the slope in your order so the installer can adjust the base accordingly.

Can I order without measuring myself?

Yes, many customers request an on-site measurement, which is the safest option. Preparing photos and a rough sketch beforehand still speeds up the process.

Common mistakes to avoid

The most common errors are measuring once and skipping a second check, and forgetting to record steps, posts or openings. Both can lead to a railing that does not fit the balcony as built.

Our recommendation

Measure every edge twice, sketch the balcony with all dimensions written on it, and send photos from a few angles. Keep the sketch with your order so the factory can confirm the details against what is on site.

Summary

Measure each open edge, the height, and every fixing point or obstacle, check everything twice, and send a labeled sketch with photos. Accurate measurements lead to a railing that fits the first time.

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